Biology - February 2007

Some background -

A man has A+ Blood.

A woman has O Blood.

A son born with A+ Blood. Naturally, this Blood group mixing confirms the father of the boy is the biological father.

(This is before DNA testing came into existence)

Now for the question -

if a boy is born of the same mother, does the boy, having B-type Blood, the biological son of the father, who has A+ Blood?

I don't believe so.

I would appreciate people giving knowledgeable answers to this question. Giving search references would help your chances of getting the Best Answer for 10 points.

People giving "game-pointing" type answers are not appreciated.

2007-02-14 09:42:32 · 3 answers · asked by Living In Korea 7

2007-02-14 09:33:02 · 1 answers · asked by DiamondA 1

2007-02-14 09:28:45 · 3 answers · asked by twig 1

what is the life span of a sperm when kept in open air?

2007-02-14 09:28:35 · 2 answers · asked by dushy 2

2007-02-14 09:26:31 · 1 answers · asked by twig 1

i got knock out once and i "blacked out" were i couldn't see and i was very dissy for like 26 sec until i dropped and couldn't wake up for a min

and i got knocked out when i was 14 and the kid who did it was like 11 and he did it because i was making fun of him

2007-02-14 09:23:46 · 3 answers · asked by animalhouser07 2

1- The frequency of recessive homozygous genotype is 0.09 in a population.What's the expected frequency of individuals homozygous for the Dominant trait?

2- Suppose that albinism (autosomal recessive trait; genotype aa) occurs among newborns in a certain population of 10,000,000 @ the frequency of 1 in 14,400. How many individuals in the population are expected to be homozygous normal (AA) for this trait?

3-In a certain human population in genetic equilibrium for the typical X-linked red-green color blindness locus,6 males in 100 are color blind. What is the expected frequency of color blind females?
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1- ? Idk if it's right but I got: .0081 are Homozygous Dominant
2-??
3-??

Did I do #1 correct? Can someone please help explain or maybe show me how to do these? They are more complicated then what I learned, I'm confused because the populations are larger, so I'm having trouble figuring out how to find the frequencies. I would really appreciate the help. Thank You! = )

2007-02-14 09:15:42 · 1 answers · asked by Miss*Curious 5

If the sequence of nucleotides in one chain of DNA molecule is T-C-A-A-G-C, a new nucleotide chain will be produced during replication with the complementary sequence:
a. T-C-A-A-G-C
b. A-G-T-T-C-G
c. C-T-G-G-A-T
d. G-A-C-C-T-A









please help me with this. please explain to me how you got it in a short summary. Oh, and tell me the answer too.

for example: a. T-C-A-A-G-C

because sometimes people explain to me how they got the answer, but they never tell me what the answer is.

THANKS TO EVERONE THAT PUT SOME EFFORT INTO THIS QUESTION AND TOOK THE TIME TO HELP ME OUT.

2007-02-14 09:11:54 · 5 answers · asked by Anonymous

just the boobs

2007-02-14 08:48:14 · 6 answers · asked by jack j 1

1- If the frequency of two alleles "A" & "a" in a gene pool is 80% & 20% respectively, what will be the expected frequency of heterozygote individuals in the population?

2- If the frequency of a recessive allele is 30% in a population of 1,000 individuals, how many individuals would you predict would be heterozygotes?

3-If gene locus has two alleles & the frequency of one of the homozygotes is 0.81, what are the frequencies of the two alleles?

4- If the frequency if gene "L" in a population is 0.6 & this gene is completely dominant to its single allele " l ", what is the % of the population expected to show the dominant phenotype?
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1- ? based on pp+2pq+qq=1, I got Aa= .32 (I did 2 x.16)
2- ??
3- ??
4- ? If I'm doing this correctly, I got 84%.
----
I know it's a lot, but can someone please see if I'm on the right track & also explain how to do these. This is confusing me, Idk if I'm using the formulas correctly. I would really appreciate it. Thank You! = )

2007-02-14 08:47:32 · 2 answers · asked by Miss*Curious 5

2007-02-14 08:38:59 · 4 answers · asked by felipe r 1

Please tell me all you can about DNA fingerprinting! Thanks!

2007-02-14 08:38:18 · 2 answers · asked by whatevaa♥ 5

2007-02-14 08:24:14 · 2 answers · asked by twig 1

This is for my biology class and I have to do a presentation

2007-02-14 08:14:58 · 13 answers · asked by Anonymous

2007-02-14 07:40:58 · 4 answers · asked by pre med student 2

I'm not quite sure how polar bears really let their liquid out!!! Please tell me !!!!!!!!!!

2007-02-14 06:54:24 · 12 answers · asked by Anonymous

2007-02-14 06:24:29 · 5 answers · asked by CLAIRE M 1

Lipid Bi-layers are formed from molecules that are both Hydophobic and Hydrophillic. Is one force stronger then the other.

2007-02-14 06:16:01 · 7 answers · asked by onemoretyme 2

2007-02-14 06:15:03 · 1 answers · asked by DiamondA 1

2007-02-14 06:08:37 · 8 answers · asked by Bistro 7

2007-02-14 05:54:33 · 16 answers · asked by kalipali 1

I mean there's defence and defense, billion and thousand million, colour and color, they also changed the order of short dates, the rest of the world uses DD/MM/YY, they usa MM/DD/YY so a short date can be two different days depending on which country you're in. It just makes things awkward. Why?

2007-02-14 05:53:02 · 8 answers · asked by Anonymous

I'm in an online biology course (instructor doesn't help) and I really don't understand this concept. I've already found all the online tutorials and they don't seem to help much either. Any suggestions?

2007-02-14 05:32:22 · 3 answers · asked by brandys_peep 2

2007-02-14 05:30:31 · 6 answers · asked by Nakreeta J 1

Can you plz explain me and give examples cuz im confused about them. thnx!

2007-02-14 05:14:39 · 2 answers · asked by Anonymous

A sample of 100 indiv is taken from a breeding population (population x) of M&Ms that is in Hardy-Weinberg equilibrium for candy color. A=blue, A' = yellow. The heterozygote (AA') phenotype is green.

1) In the sample of 100 indiv, 30 were blue, 50 were green, and 20 were yellow. In this sample, what is the frequency of the A' allele?
2) In the original population x, p(A) =.6. If the same has the same allele frequency, how many indiv of the 100 candies in the sample would be expected to be green?

2007-02-14 05:04:16 · 2 answers · asked by Anonymous

2007-02-14 04:43:43 · 7 answers · asked by juneaulady 4

Given the fact that we can create artificial DNA, we can manipulate genes and create molecules with all science combined it should be possible to create "Artificial Soldiers" to go into battle for "natural" people,should we?

2007-02-14 04:34:37 · 10 answers · asked by Anonymous

are there any other species that have this problem? If not WHY?
I have heard that as the common man started walking upright, it caused the pelvis to squeeze together.

2007-02-14 04:32:03 · 11 answers · asked by Bistro 7

Actually I am doing a research on dipeptidyl peptidase 4 (DPP-IV) inhibitors and i would like to know more about the enzyme itself. Where is it biosynthesized in the human body? What is the pathway of its synthesis? When and how was it discovered? Do you know any useful references (books, journals, websites)?

2007-02-14 04:30:45 · 1 answers · asked by berry_nutty_tart 2